| North Sea Countries | 0 | - | 4.92 | 87,454 |
| Black Sea Countries | 0 | - | 4.87 | 60,635 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,423 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,522 |
| Countries With No Rivers | 0 | - | 4.96 | 76,876 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,119 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,265 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,874 |
| Countries with Fjords | 0 | - | 4.94 | 100,985 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,874 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,602 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,763 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,707 |
| Megadiverse Countries | 0 | - | 4.96 | 134,968 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,987 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,272 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,924 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,252 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,266 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,539,383 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,450 |
| Landlocked Countries | 0 | - | 4.99 | 421,446 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,532 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,774,799 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,345 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,182 |
| Himalayan Countries | 0 | - | 4.95 | 138,476 |
| Andean Countries | 0 | - | 4.93 | 84,470 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,662 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,641 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,293 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,696 |
| Danube Countries | 0 | - | 4.97 | 71,944 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,932 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,360 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,188 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,648 |
| European Landlocked Countries | 0 | - | 4.99 | 147,069 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,528 |
| Countries with the Most Species | 0 | - | 4.99 | 103,178 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,677 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,551 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,696 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,500 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,180 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,599 |
| Countries in the Alps | 0 | - | 4.87 | 118,118 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,711 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,933 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,606 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,542 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,428 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,902 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,600 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,445 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,142 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,794 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,618 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,482 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,168 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,422 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,461 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,760 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,256 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,484 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,978 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,657 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,936 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,176 |
| Largest Countries By Category | 0 | - | 4.97 | 158,109 |
| Countries by Countries | 0 | - | 4.96 | 63,136 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,258 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,616 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,601 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,181 |
| Seas on the World Map | 0 | - | 4.96 | 135,471 |
| Seas of the World | 0 | - | 5.00 | 157,222 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,783 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,130 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,357 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,884 |
| Island Countries | 0 | - | 4.99 | 710,834 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,308 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,145 |
| Northernmost Countries | 0 | - | 4.99 | 361,718 |
| Countries of South America | 0 | - | 5.00 | 926,556 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,887 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,509 |
| "Land" Countries | 0 | - | 4.98 | 337,163 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,581 |
| Landforms by Country | 0 | - | 4.52 | 51,978 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,100 |
| African Great Lakes | 0 | - | 4.82 | 66,371 |
| Seas of Europe | 0 | - | 4.37 | 84,698 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,286 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,764 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,751 |
| Countries with Megacities | 0 | - | 4.99 | 264,218 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,606 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,396 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,867 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,460 |
| Countries by Official Language | 0 | - | 4.95 | 195,147 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,221 |
| Countries in their Native Language | 0 | - | 4.99 | 198,936 |
| Independence from Whom | 0 | - | 4.99 | 211,960 |
| Subdivisions by Country | 0 | - | 4.86 | 50,400 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,635 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,984 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,320 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,028 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,089 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,048 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,562 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,387 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,997 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,616 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,092 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,573 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,845 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,171 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,931 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,320 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,464 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,017 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,297 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,989 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,214 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,935 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,070 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,826 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,961 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,254 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,409 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,526 |
| Widest Countries East to West | 0 | - | 4.92 | 129,594 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,436 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,323 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,100 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,728 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,533 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,803 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,352 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,789 |
| Countries with Double Letters | 0 | - | 4.96 | 96,096 |
| Countries that End in N | 0 | - | 4.95 | 170,982 |
| Countries with Five Letters | 0 | - | 4.96 | 282,176 |
| Countries with Six Letters | 0 | - | 4.94 | 213,405 |
| Countries with W | 0 | - | 4.97 | 160,223 |
| Countries with Z | 0 | - | 4.98 | 291,285 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,577 |
| Countries That End in U | 0 | - | 4.95 | 120,780 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,347 |
| Countries that End in O | 0 | - | 4.92 | 159,465 |
| Countries that End in R | 0 | - | 4.87 | 118,930 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,689 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,951 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,612 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,412 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,332 |
| Countries That End in Y | 0 | - | 4.91 | 185,839 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,818 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,777 |
| Countries that End in I | 0 | - | 4.94 | 135,050 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,993 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,774 |
| Countries That End in NIA | 0 | - | 4.92 | 109,725 |
| Countries That End in BIA | 0 | - | 4.93 | 149,133 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,035 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,367 |
| Countries That End in RIA | 0 | - | 4.93 | 126,769 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,954 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,431 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,613 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,010 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,577 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,542 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,961 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,427 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,467 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,385 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,907 |
| Countries that End in L | 0 | - | 4.94 | 156,774 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,426 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,246 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,982 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,907 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,952 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,638 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,577 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,926 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,468 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,346 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,818 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,068 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,685 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,837 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,698 |
| One Border Countries | 0 | - | 4.98 | 469,555 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,629,351 |
